30 calculator

Converters

Converts between 30+ currencies at current rates. Handy for travel, online shopping and international payments.

Converts Celsius, Fahrenheit and Kelvin with exact formulas and shown steps. Remember: 0°C = 32°F, not 0°F.

Converts kilograms to pounds and back. 1 kg = 2.2046 lbs — precision matters at larger values.

Converts kilometres to miles and back to three decimal places. Useful in the US, UK or when reading international specs.

Local context: how this works in Canada

Canada mixes metric measurement with imperial habits, so Converters is set up to match what people actually quote here.

Currency & tax: Canadian dollars (C$1,234.56). GST is 5% federally, combined into HST in Ontario and Atlantic provinces, or added to a separate PST in BC, SK and MB.
Income tax: Federal rates of 15–33% stack on top of provincial rates, so the same income is taxed very differently in Alberta and Quebec.
Retirement: CPP (QPP in Quebec) plus OAS form the public layer; RRSP and TFSA carry the private savings side, each with its own annual limit.
Units: Officially metric — km, kg, °C, litres — but housing is quoted in square feet and height in feet and inches.
Power: 120 V / 60 Hz with Type A/B outlets, and electrical work follows the Canadian Electrical Code rather than the US NEC.

Example — Ontario: A buyer in Toronto runs Converters with HST at 13% to see the all-in figure before making an offer.
Example — Quebec: A worker in Montreal uses Converters with QPP instead of CPP, which shifts the deduction line noticeably.

Every figure above applies to Canada specifically and is reviewed when the rules change.