Everyday
Everyday: Tips, splitting the bill, downloads. Free, simple calculators with no sign-up.
Everyday
- Tip calculator and bill splitterThe tip, the total and how much each person pays.
- Download time calculatorHow long a file takes to download at your connection speed.
- Timesheet calculator with payTotal hours for the week, overtime and pay, from your start and end times.
- Concrete volume calculatorConcrete volume for a slab, footing, round columns or stairs, and how many bags.
- Fuel cost calculator for a tripHow many litres and how much money a car trip takes.
- Voltage drop calculator for a cableVoltage lost in a cable from its length, its cross-section and the current.
- Heating power estimateA rough order of magnitude of the heating power a home needs.
- Ohm’s law calculator: voltage, current, resistance, powerGive two values among V, I, R and P: we work out the other two.
- Room and floor area calculatorAdd up rectangles and take away openings to get a floor area.
- Compatibility game (just for fun)A little game: two nicknames give a fun percentage that means nothing.
- Engine power from torquePower in kW and horsepower from torque and engine speed.
- GDP calculator (expenditure approach)Gross domestic product from consumption, investment, government and foreign trade.
- GPA calculator (4.0 scale)Work out your GPA from letter grades (A, B+, C…) and the credits of each course, on the US 4.0 scale.
- Weighted grade average calculatorThe weighted average of your grades, and the grade you need on the next test to reach your goal.
- IP subnet calculator (IPv4 and IPv6)Network address, mask, usable address range and broadcast of an IPv4 subnet or an IPv6 prefix.
- Password generatorCreate a strong random password in your browser, with its strength in bits of entropy.
- Online dice rollerRoll 1 to 100 dice with 2 to 1000 faces (d6, d20…), with an optional bonus, and see each result.
- Stair calculator (Blondel rule)Number of steps, rise and going of each step, slope and comfort (2R + G) of a straight staircase.
- Resistor color code and series/parallel calculatorFind a resistor’s value from its color bands (4 or 5), or the equivalent resistance of several resistors.
- Appliance electricity cost calculatorWhat an electrical appliance costs to run: energy used in kWh and the price for the period, per day and per year.
- Mileage reimbursement calculator (your own rate)Add up your trips and multiply by your rate per kilometre to get the amount to claim.
- Golf handicap index calculator (WHS)Estimate your golf Handicap Index under the World Handicap System from your latest score cards.
- Sleep calculator (bedtime by sleep cycles)When to go to bed to wake up at the end of a 90-minute sleep cycle, or when to wake up.
- Molar concentration calculator (mol/L)The concentration of a solution in mol/L, from the dissolved mass or the amount of substance.
- Molar mass calculator for a chemical formulaThe molar mass in g/mol of a chemical formula, with the share of each element.
- Tire size comparison calculatorCompare two tire sizes: diameter, difference in %, and your true speed when the speedometer shows 100.
- Roof area calculatorThe real area of a roof from its footprint and pitch, with a margin and the number of tiles.
- Tile calculatorThe number of tiles and boxes for an area, joints and offcuts included.
- Mulch calculatorThe volume of mulch (bark, wood chips, straw) and the number of bags to cover a bed.
- Gravel calculatorThe volume and weight of gravel for a path or a yard, and the cost per tonne.
- Wind chill calculatorThe feels-like temperature in cold, windy weather, using the NWS and Environment Canada formula.
- Heat index calculatorThe feels-like temperature when it is hot and humid, using the US NWS method.
- Dew point calculatorThe temperature at which air becomes saturated and fog or dew appears.