Online Calculators for Finance, Health & Everyday Math

Length Converter

Value

From

To

Result

—

in

Quick Conversion Table

Based on current input.

Unit	Value

History (short): The meter is the SI base unit of length, defined by the distance light travels in vacuum in 1/299,792,458 of a second.

Length – Full History

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Area Converter

Value

From

To

Result

—

in²

Quick Conversion Table

Based on current input.

Unit	Value

History (short): The square meter (m²) is the SI derived unit for area. Land area commonly uses hectares (10,000 m²) and acres (~4,046.86 m²).

Area – Full History

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Weight Converter

Value

From

To

Result

—

ct

Quick Conversion Table

Based on current input.

Unit	Value

Weight – Full History

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Temperature Converter

Value

From

To

Result

—

°F

Quick Conversion Table

Based on current input.

Unit	Value

Formulas: K = °C + 273.15; °F = (°C × 9/5) + 32.

Temperature – Full History

Time Converter

Value

From

To

Result

—

min

Quick Conversion Table

Based on current input.

Unit	Value

Note: “mo” and “yr” use average Gregorian lengths (not calendar-specific).

Time – Full History

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Volume Converter

Value

From

To

Result

—

tsp

Quick Conversion Table

Based on current input.

Unit	Value

Note: US vs Imperial volumes differ (e.g., US gallon 3.785 L vs Imperial gallon 4.546 L).

Volume – Full History

Depreciation Calculator

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Cost

Method

Salvage Value

Life (years)

Total Depreciation

—

End Book Value: —

Book value should equal salvage at the end (within rounding).

DDB: Switch to SL when higher?

Rounding (decimals)

Schedule (yearly)

Year	Depreciation	Accumulated	Book Value	Note

Depreciation – History

Rent Affordability Calculator

Monthly Income

Income is Gross (before tax)

Monthly Debts

Rule

Utilities (Monthly)

Renter’s Insurance (Monthly)

Target Savings (%)

Show Conservative/Moderate/Aggressive ranges

Your Result

—

Rent-to-Income: —

Total DTI: —

Housing Costs:

Rent: —

Utilities: —

Insurance: —

Total Housing: —

Rent – History

Salary (Gross ↔ Net) Calculator

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Mode

2% levy

Apply additional 2% levy to gross.

Pay Frequency

Amount

Gross if Gross→Net; Target Net if Net→Gross.

Hours / Week

Weeks / Year

Country

Region

Tax Year

Your Result

Headline: —

Hourly: —

Weekly: —

Bi-Weekly: —

Semi-Monthly: —

Monthly: —

Annual: —

Taxes

Medical Levy: —

Tax: —

Total Tax: —

Salary – History

Australia – Income Tax (2024–25)

Entity type

Individuals use marginal brackets; companies typically use a flat rate.

Annual taxable income (AUD)

Enter income after deductions.

Annual Revenue

Enter genrated revenue .

Annual Cost

Enter Cost.

Medicare levy

Standard Medicare levy is 2% (residents).

Tax Paid

Paid tax.

Result

Income tax

—

Medicare levy

—

Total payable

—

Income After Tax

—

tax paid on your income

—

Tax Payable

—

Annual Cost

—

Annual Revenue

—

total taxable income

—

Total Payable

—

tax paid on your income

—

Tax Payable

—

Brackets used (resident 2024–25): 0–18,200: 0%; 18,201–45,000: 16% over 18,200; 45,001–135,000: 4,288 + 30% over 45,000; 135,001–190,000: 31,288 + 37% over 135,000; 190,001+: 51,638 + 45% over 190,000.

Tax – Full History

Mortgage Calculator

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Home Price

Down Payment (amount)

Term (years)

APR (%)

Annual Property Tax ($/yr)

Annual Home Insurance ($/yr)

PMI (% of loan / yr, optional)

HOA ($/mo, optional)

Start Date (YYYY-MM-DD, optional)

Monthly Total

—

P&I: —

Tax: — · Ins: —

PMI: — · HOA: —

Loan: — · Total Interest: —

Payoff: —

Amortization (12 rows for 1y)

#	Date	Payment	Interest	Principal	Balance	PMI	Tax	Ins	HOA	Total

Note: The mortgage calculation is based on an average annual tax and insurance rate.

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Rent Calculator

Depreciation Calculator

Mortgage Calculator

Length Converter

Time Calculator

Area Converter

volume Calculator

Temperature Calculator

Weight Calculator

Categories

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Scientific Calculator

Length – Full History

Area – Full History

Weight – Full History

Temperature – Full History

Time – Full History

Volume – Full History

Depreciation – History

Rent – History

Salary – History