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New Zealand calculator directory

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Search 103 calculators available for New Zealand, or browse by topic to move from a broad question to the next useful calculation.

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Start with a goal, not a formula

Follow a short sequence of calculators when one answer depends on the next decision. Each step opens separately, so you remain in control of what you calculate.

103 calculators found

💼Business

Break Even Analysis

Find the break-even point where revenue covers total costs. Enter fixed costs, variable costs and unit price to see how many sales you need to profit.

💼Business

Cash Flow Calculator

Calculate net cash flow by totalling inflows and outflows. Track whether your business or household generates a positive or negative cash position each period.

💼Business

Cost Per Unit Calculator

Calculate the cost per unit of any product by dividing total costs by quantity produced. Use this to set competitive prices and maintain healthy profit margins.

💼Business

Markup Calculator

Calculate the selling price and profit margin from cost and markup percentage. Find the right markup to hit your target profit on any product.

💼Business & Freelance

Break-Even Calculator

Calculate units or revenue needed to cover all costs and break even. Enter fixed costs, variable costs per unit and selling price to find your break-even point.

💼Business & Freelance

Hourly Rate Calculator

Calculate the minimum hourly rate you need to charge as a freelancer to hit your income goal.

💼Business & Freelance

Invoice Totals Calculator

Calculate invoice totals including subtotal, VAT and discounts applied. Quickly work out what to charge clients and produce accurate figures for your invoices.

💼Business & Freelance

Profit Margin Calculator

Calculate gross, operating and net profit margins from revenue and cost figures. See how efficiently your business converts sales into profit at each level.

🚗Car & Transport

Car Depreciation Calculator

Calculate how much your car will depreciate over time. See future value and total loss.

£20k car at 15% depreciation = £10,368 after 5 years

🚗Car & Transport

Car Loan Calculator

Calculate UK car finance and loan repayments, total interest, and borrowing cost. Compare deposits, APRs, and terms before you apply.

£15k car, £3k deposit, 7.9% APR = £267/month

🚗Car & Transport

Car Running Cost Calculator

Calculate total annual car running costs including fuel, insurance, depreciation and servicing.

Try our car running cost calculator for instant results

🚗Car & Transport

Electric vs Petrol Calculator

Compare annual running costs of electric vs petrol cars based on your mileage and energy prices.

Try our electric vs petrol calculator for instant results

🚗Car & Transport

EV Charging Cost Calculator

Calculate electric car charging costs per charge, per month and per mile at home or public chargers.

Try our ev charging cost calculator for instant results

🚗Car & Transport

Fuel Cost Calculator

Calculate annual fuel costs based on your mileage, MPG, and fuel price per litre.

10k miles/year, 40 MPG, £1.50/L = £936/year

🏦Credit & Debt

Credit Card Payoff Calculator

Calculate how long it takes to pay off a credit card and see total interest costs.

£3,000 balance at 18% APR

🏦Credit & Debt

Debt Consolidation Calculator

Calculate potential savings from consolidating high-interest debts into a lower-rate loan.

£3,000 balance at 18% APR

🏦Education & Training

Cost of University Calculator

Estimate total university costs including tuition, accommodation, and living expenses.

Try our cost of university calculator for instant results

Energy & Bills

Electricity Cost Calculator

Calculate your electricity costs per day, month and year based on your usage and unit rate.

2,000 kWh/year at £0.24/kWh = £480/year

Energy & Bills

Energy Bill Calculator

Calculate your total annual energy bill combining gas and electricity usage, unit rates and standing charges.

Try our energy bill calculator for instant results

Energy & Bills

Gas Bill Calculator

Calculate your monthly and annual gas bill from your daily usage, unit rate and standing charge.

Try our gas bill calculator for instant results

Energy & Bills

Solar Panel Savings Calculator

Calculate solar panel savings, payback period and 10-year return based on your system size and energy prices.

£10,000 at 5% for 10 years

🏦Finance

APR to APY Calculator

Convert APR to APY to understand the true annual return when interest compounds. See how compounding frequency affects the effective yield on savings or loans.

🏦Finance

Home Affordability Calculator

Calculate how much house you can afford based on income, deposit and outgoings. Estimate the maximum mortgage and property price that fits your finances.

🏦Finance

Inflation Calculator

Calculate how inflation erodes purchasing power over time. Enter an amount and time period to see what today's money was worth in the past or future.

🏦Finance

Mortgage Amortization Calculator

Generate a full mortgage amortization schedule showing monthly principal and interest. See how your balance reduces over the entire term of your home loan.

🏦Finance & Mortgages

Buy-to-Let Yield Calculator

Calculate gross and net yield on a UK buy-to-let property. Factor in rental income, purchase costs and expenses to assess whether the investment stacks up.

🏦Finance & Mortgages

Deposit Savings Calculator

Calculate how long it will take to save a house deposit based on your monthly savings and interest rate.

£10,000 at 5% for 10 years

🏦Finance & Mortgages

Early Repayment Savings Calculator

Calculate interest saved by making early or overpayments on your mortgage or loan. See how extra payments reduce your balance and shorten your repayment term.

🏦Finance & Mortgages

Fixed vs Variable Mortgage Calculator

Compare fixed-rate and variable-rate mortgages side by side. See total interest and monthly repayments under each option to choose the right mortgage type.

🏦Finance & Mortgages

Interest-Only Mortgage Calculator

Estimate UK interest-only mortgage payments and total interest. See the unchanged capital due at the end and compare a repayment mortgage.

🏦Finance & Mortgages

Loan Repayment Calculator

Estimate UK personal loan repayments, total interest and total amount repayable from the amount, APR and term you enter.

🏦Finance & Mortgages

Mortgage Affordability Calculator

Estimate UK mortgage affordability from household income, monthly expenses, interest rate, and term. Stress-test borrowing before applying.

🏦Finance & Mortgages

Mortgage Calculator

Estimate UK mortgage repayments, total interest, and LTV. Compare loan amounts, rates, repayment types, and terms before requesting a quote.

🏦Finance & Mortgages

Mortgage Overpayment Calculator

Calculate interest saved and years cut by overpaying your mortgage each month. See the long-term financial benefit of making regular extra mortgage payments.

🏦Finance & Mortgages

NZ Mortgage Calculator

Calculate your New Zealand mortgage repayments weekly, fortnightly, or monthly. See total interest and LVR. Uses current NZ interest rates with RBNZ lending context.

🏦Finance & Mortgages

Refinancing Calculator

Calculate potential savings from refinancing your mortgage to a lower rate. Compare your current monthly payment and total cost against a new refinancing deal.

❤️Health & Fitness

Heart Rate Zone Calculator

Calculate personalised heart rate training zones using the Karvonen method. Find your fat burn and aerobic zones.

Try our heart rate zone calculator for instant results

❤️Health & Fitness

Ideal Weight Calculator

Calculate your ideal weight range based on height and healthy BMI. Find your target weight.

Try our ideal weight calculator for instant results

❤️Health & Fitness

Running Pace Calculator

Calculate running pace per km and per mile from your distance and time. Convert between pace and speed.

Try our running pace calculator for instant results

❤️Health & Fitness

Water Intake Calculator

Calculate your recommended daily water intake based on weight and activity level.

Try our water intake calculator for instant results

❤️Health & Lifestyle

BMI Calculator

Calculate your Body Mass Index using height and weight to assess whether you are underweight, healthy, overweight or obese using standard BMI classifications.

❤️Health & Lifestyle

BMR Calculator

Calculate your Basal Metabolic Rate to find the calories needed at rest each day. Use BMR to set a calorie target for weight loss, maintenance or muscle gain.

❤️Health & Lifestyle

Body Fat Calculator

Estimate body fat percentage using waist, hip and neck measurements. Understand your body composition and track progress toward your health and fitness goals.

❤️Health & Lifestyle

Calorie Calculator

Calculate your daily calorie needs for maintenance, weight loss, or weight gain.

❤️Health & Lifestyle

Macros Split Calculator

Calculate your daily macronutrient split of protein, carbohydrates and fat based on your calorie goal. Plan your diet to support weight loss or muscle gain.

🚗Insurance

Car Insurance Calculator

Estimate your annual car insurance cost based on vehicle value, age, and claims history.

Car value £15,000, age 3 years

🏦Insurance

Home Insurance Calculator

Calculate estimated home insurance costs based on property value and risk factors.

Car value £15,000, age 3 years

📈Investments

Annuity Calculator

Calculate annuity payments, present value and future value for fixed income streams. Estimate how much regular income your pension or investment will generate.

📈Investments

Future Value Calculator

Calculate the future value of an investment or savings plan with compound interest. Enter the principal, rate, compounding frequency and time to project growth.

📈Investments

Present Value Calculator

Calculate the present value of a future cash flow discounted at a given interest rate. Understand what a future sum or annuity stream is worth in today's money.

📈Investments

Savings Calculator

Calculate how your savings will grow with regular deposits and compound interest. Enter your balance, monthly contribution and rate to project future savings.

🏦Investments

Simple Interest Calculator

Calculate simple interest earned or owed on a loan or deposit. Enter the principal, annual interest rate and term in years to find the total interest amount.

📈Investments & Savings

Compound Interest Calculator

Calculate how compound interest grows savings or increases debt over time. Enter principal, rate, compounding frequency and term to project your final balance.

📈Investments & Savings

Dividend Yield Calculator

Calculate the dividend yield of a stock by dividing the annual dividend by the share price. Assess income potential before investing in dividend-paying shares.

📈Investments & Savings

Index Fund Calculator

Project index fund investment growth with lump sum and regular contributions. See long-term compound returns.

Try our index fund calculator for instant results

📈Investments & Savings

Investment Return Calculator

Calculate simple investment profit, total return, and annualised return from a starting value, ending value, and holding period.

📈Investments & Savings

KiwiSaver Calculator

Calculate how much your KiwiSaver will grow by retirement. Includes employer 3% contributions and the government Member Tax Credit of up to $521 per year.

📈Investments & Savings

NZ Superannuation Calculator

Calculate your New Zealand Superannuation (NZ Super) and total retirement income. See 2024/25 NZ Super rates by living situation plus your projected KiwiSaver balance.

📈Investments & Savings

Retirement Savings Calculator

Calculate how much you will have at retirement based on your savings and contributions.

📈Investments & Savings

Savings Growth Calculator

Calculate how your savings grow over time with regular contributions and compound interest. Project your future balance to plan for any savings goal.

🌟Lifestyle & Everyday

Childcare Cost Calculator

Calculate annual and monthly childcare costs after free hours entitlement and Tax-Free Childcare savings.

Try our childcare cost calculator for instant results

🌟Lifestyle & Everyday

Holiday Cost Calculator

Calculate total holiday costs including flights, hotel, and spending money for any number of people.

Try our holiday cost calculator for instant results

🌟Lifestyle & Everyday

Split Bill Calculator

Split a restaurant bill equally between any number of people, with or without a tip.

Try our split bill calculator for instant results

🌟Lifestyle & Everyday

Wedding Budget Calculator

Plan your wedding budget with a recommended breakdown by venue, catering, photography and more.

Try our wedding budget calculator for instant results

🏦Loans

Loan Calculator

Estimate UK personal loan repayments, total interest, and total amount repayable. Compare APR and term before applying.

🌟Misc

Bill Splitter

Split any bill fairly among friends, family or colleagues. Enter the total amount and number of people to calculate each person's share, including optional tip.

🌟Misc

Date Difference Calculator

Calculate the exact difference between two dates in years, months, weeks and days. Find how long until an event or how much time has passed since any past date.

🔧Misc

Percentage Change Calculator

Calculate the percentage increase or decrease between two values. Find the percentage change from an original to a new value for finance, grades or statistics.

🌟Misc

Temperature Converter

Convert temperatures between Celsius, Fahrenheit and Kelvin in one click. Accurate temperature conversion for cooking, science, weather and travel planning.

🏦Miscellaneous

Currency Converter

Convert amounts between major world currencies using current exchange rates. Find the equivalent in any currency for travel, business or international payments.

🔧Miscellaneous

Loan-to-Value Calculator

Calculate your loan-to-value ratio by dividing your mortgage by the property value. Use LTV to understand equity, remortgage options and available rates.

🔧Miscellaneous

Percentage Calculator

Calculate percentages instantly — what percent is X of Y, and percentage of a number.

🌟Miscellaneous

Timezone Converter

Convert times between any two time zones worldwide. Find the equivalent local time for meetings, calls or travel across different countries and time zones.

🌟Miscellaneous

Unit Converter

Convert between units of length, weight, volume, speed, area and more. Fast and accurate unit conversion for everyday tasks, cooking, science and engineering.

🏦New Zealand Finance

KiwiSaver First Home Withdrawal Calculator

Calculate how much KiwiSaver you can withdraw for your first home and estimate your First Home Grant. Requires 3 years of KiwiSaver membership to qualify.

💰New Zealand Tax

ACC Levy Calculator (NZ)

Calculate your New Zealand ACC earner levy and work levy for 2024/25. Covers employees (earner levy only), self-employed workers, and employers using current ACC rates.

💰New Zealand Tax

New Zealand Income Tax Calculator

Calculate your 2024/25 New Zealand income tax using IRD brackets. Includes ACC earner levy (1.60%) and KiwiSaver deductions to show your true take-home pay.

💰New Zealand Tax

NZ GST Calculator

Calculate New Zealand GST at 15%. Add GST to an ex-GST price, remove GST from an inclusive price, or find the GST component in a GST-inclusive amount.

💰New Zealand Tax

NZ Paycheck Calculator

Calculate your New Zealand take-home pay per week, fortnight, or month. Includes IRD income tax, ACC levy, KiwiSaver, and student loan deductions using 2024/25 IRD rates.

💰New Zealand Tax

NZ Self-Employed Tax Calculator

Calculate your New Zealand self-employed tax including income tax, ACC work levy, and provisional tax. Uses 2024/25 IRD rates for sole traders and contractors.

💰New Zealand Tax

NZ Student Loan Repayment Calculator

Calculate your New Zealand student loan repayment amount and how many years until it’s cleared. Uses the 2024/25 IRD threshold of $22,828 and 12 cent repayment rate.

💰New Zealand Tax

NZ Student Loan Repayment Estimator

Estimate your NZ student loan repayment based on the 2024/25 IRD threshold of $22,828 and 12% repayment rate. See annual and weekly deductions and payoff timeline.

💰New Zealand Tax

Working for Families Calculator (NZ)

Calculate your Working for Families (WFF) tax credits for 2024/25. Includes Family Tax Credit, In-Work Tax Credit, and the income abatement from $42,700.

🏠Property

Closing Costs Calculator

Estimate closing costs when buying a property, including legal fees, surveys and stamp duty. Budget for the total upfront cost of completing a home purchase.

🏠Property

Lease vs Buy Calculator

Compare the total cost of leasing versus buying a car or asset. Enter lease terms, purchase price and finance rate to find the most cost-effective option.

🏠Property

Property Tax Calculator

Calculate property tax owed based on assessed value and local tax rates. Estimate your annual bill to budget accurately for the cost of owning real estate.

🏠Property

Rent vs Buy Calculator

Compare the long-term cost of renting versus buying a home. Enter property price, rent, mortgage rate and duration to see which option suits you best.

🏠Property & Housing

Bright-Line Property Tax Calculator (NZ)

Calculate New Zealand bright-line property tax. From 1 July 2024 the period is 2 years for all residential property. See taxable gain at your marginal rate.

🏠Property & Housing

NZ Rental Yield Calculator

Calculate your New Zealand rental property gross and net yield. Includes mortgage interest, expenses, and tax benefit if negatively geared using 2024/25 IRD rates.

🏠Property & Land

Landlord Profit Calculator

Calculate monthly and annual landlord profit after mortgage, agent fees, maintenance and insurance.

Try our landlord profit calculator for instant results

🏠Property & Land

Rent Increase Calculator

Calculate the new monthly rent after a percentage increase and see the extra monthly and annual cost.

£250,000 property

🏠Property & Real Estate

Buy-to-Let ROI Calculator

Calculate rental profits and return on investment for buy-to-let property investments.

£5,000 investment at 8% annual return

🏠Property & Real Estate

Capital Growth Calculator

Calculate the capital growth of a property or investment over a set period. Enter purchase price, annual growth rate and years held to project the future value.

🏠Property & Real Estate

Mortgage vs Rent Calculator

Compare the total cost of buying with a mortgage versus renting long-term. Factor in house price growth, rent increases and investment returns to decide wisely.

🏠Property & Real Estate

Property Flipping Profit Calculator

Calculate profit and ROI on property flipping projects including renovation costs.

🏠Property & Real Estate

Rental Yield Calculator

Calculate gross and net rental yield on a buy-to-let property. Enter purchase price, annual rent and costs to see whether an investment property stacks up.

🏠Property & Real Estate

ROI Calculator

Calculate return on investment as a percentage of your initial outlay. Enter net profit and investment cost to measure efficiency of any business decision.

🏦Salary

Overtime Calculator

Calculate overtime pay based on your hourly rate and hours worked beyond your standard week. Find out how much extra you earn for working additional hours.

💰Tax & Salary

Hourly to Salary Calculator

Convert an hourly wage to an annual salary or annual pay to an hourly rate. Compare earnings across different pay structures to evaluate job offers accurately.

💰Tax & Salary

Overtime Pay Calculator

Calculate overtime earnings with any multiplier — time-and-a-half, double time, and more.

🌟Utility

Age Calculator

Calculate your exact age in years, months, days and weeks. Enter your date of birth to find out precisely how old you are today.

🏦Utility

Discount Calculator

Calculate the final price after a percentage or fixed discount. Enter the original price and discount amount to find out exactly how much you save.

🔧Utility

Tip Calculator

Calculate the right tip amount and split the bill evenly among friends. Enter the total and tip percentage to see each person's share.