103 free calculators · no sign-up

Accurate calculators for real-world jobs.

103 free calculators for building, home, crafts, money and everyday life — with live results, US and metric units, and every step of the working shown. No sign-up.

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10 toolsEveryday Calculators

Percentage, Split Bill, Age

20 toolsConstruction & Building

Concrete Slab, Asphalt, Backsplash Tile

3 toolsContractor Quotes & Billing

Change Order Generator, Landscaping Quote, Time & Materials (T&M) Ticket

3 toolsWoodworking & Timber

Board Foot, Round Log CFT, Wood CFT

7 toolsResin, Candles & Soap

3D Print Cost, Candle Fragrance Load, Candle Wax

6 toolsSewing, Quilting & Yarn

Cross Stitch Fabric, Embroidery Hoop Size, Fabric Yardage

14 toolsHome & Garden

Mulch, Carpet, Deck

7 toolsPools, Spas & Aquariums

Pool Chemical, Aquarium Volume, Hot Tub Volume

6 toolsElectrical & Batteries

Electricity Cost, EV Charging Cost, Inverter Battery Backup

2 toolsHeating & Cooling

AC Size, Water Heater Size

2 toolsPets & Animals

Dog Age, Dog Food

2 toolsFarm & Homestead

Chicken Feed, Hay

7 toolsFood & Drink

ABV Calculator (Homebrew), Cake Pan, Coffee Ratio

4 toolsCars & Travel

Mileage Reimbursement, Car Loan, Fuel Cost

11 toolsMoney & Business

Break-Even, Byaj, Commission

1 toolConverters

Tola to Gram

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Percentage CalculatorEveryday CalculatorsSix percentage calculators in one: percentage change from one value to another, what is X% of Y, X is what percent of Y,Concrete Slab CalculatorConstruction & BuildingWork out how much ready-mix concrete to order for a slab, patio, driveway or shed base. Get cubic yards or cubic metres 3D Print Cost CalculatorResin, Candles & SoapWork out what a 3D print really costs: filament (by grams or metres), electricity for the print time, a failed-print all Asphalt CalculatorConstruction & BuildingEstimate how much asphalt you need for a driveway, path or parking area. Enter the size and compacted thickness to get U Mileage Reimbursement CalculatorCars & TravelWork out mileage reimbursement or your deductible business mileage using the official 2026 IRS standard mileage rates — Mulch CalculatorHome & GardenWork out how much mulch to buy for garden beds, borders and tree rings. Enter the area and depth to get cubic yards or c Pool Chemical CalculatorPools, Spas & AquariumsType in your pool test results and targets to get a step-by-step dosing plan: how much chlorine, muriatic acid or soda a Split Bill CalculatorEveryday CalculatorsSplit a check fairly. Divide it evenly, or enter what each person ordered plus any shared items, and the calculator shar

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Time & Materials (T&M) Ticket CalculatorBill time-and-materials work accurately. Add each worker or trade with hours and rate, the materials and equipment used, and your markups. TContractor Quotes & Billing Change Order GeneratorWrite up extra work — or a credit — before you start it. Enter the original contract sum, the materials, subcontractor and labor costs of thContractor Quotes & Billing Landscaping Quote CalculatorPrice any landscaping or hardscaping job the way the pros do. Enter your material costs, crew size, hours and labor rate, your markup and anContractor Quotes & Billing Chicken Feed CalculatorSee what your backyard flock eats and what your eggs cost. Enter the number of chickens, how much each eats per day, your feed bag size and Farm & HomesteadHay CalculatorPlan your winter hay. Add each group of animals with its number and average weight, enter how many days you need to feed hay and how much geFarm & Homestead Backsplash Tile CalculatorPlan a kitchen or bathroom backsplash. Add each wall section behind the counters, sink and range, subtract any windows, and choose the tile Construction & BuildingPriming Sugar CalculatorGet the right carbonation in your homebrew. Enter the batch size, the CO₂ volumes you want and the warmest temperature the beer reached afteFood & Drink Embroidery Hoop Size CalculatorCheck a machine embroidery design against common hoop sizes — 4 × 4, 5 × 7, 6 × 10, 8 × 8, 8 × 12 and larger. Enter the design’s width and hSewing, Quilting & Yarn

Checked formulas

Every calculator is tested against worked examples from published sources before it goes live.

US & metric units

Feet, inches, gallons and pounds or metres, litres and kilograms — switch on any field.

Working shown

See each step of the maths, so you can check the numbers before you buy materials.

Free & private

No account and nothing to install. Calculations run in your browser and work offline once opened.