Health
BMI Calculator
Calculate your Body Mass Index (BMI) and understand your weight category with our easy-to-use BMI calculator supporting both metric and imperial units.
Body Fat Calculator
Calculate your body fat percentage using US Navy method and BMI method. Free body fat calculator with comprehensive results, ideal ranges, and health recommendations.
Body Surface Area Calculator
Calculate Body Surface Area (BSA) using six clinical formulas: Mosteller, DuBois, Haycock, Gehan & George, Boyd, and Fujimoto. Used for chemotherapy dosing, cardiac index, and burn assessment.
Caffeine Intake Calculator
Track your daily caffeine intake from coffee, tea, energy drinks, and soda. Compare your total to safe limits based on weight, pregnancy, or age, and see sleep impact.
Calorie Burned Calculator
Calculate calories burned during exercise and daily activities. Uses accurate MET values for over 40 activities including running, cycling, swimming, sports, and household tasks.
Calorie Deficit Calculator
Calculate your daily calorie deficit to reach a goal weight by a target date. Get your BMR, TDEE, target intake, and safety guidance based on Mifflin-St Jeor and the 7,700 kcal/kg rule.
Daily Calorie Needs Calculator
Calculate your daily calorie requirements based on age, height, weight, sex, and activity level. Get personalized BMR and TDEE calculations for weight loss, maintenance, and weight gain goals.
Daily Water Intake Calculator
Calculate how much water you should drink per day based on your weight, activity level, and climate.
Ideal Body Weight Calculator
Calculate your Ideal Body Weight (IBW) using Devine, Hamwi, Robinson, and Miller formulas. Also calculates Adjusted Body Weight (AdjBW) for obese patients. Free, instant, and clinically accurate.
One Rep Max Calculator
Estimate your one rep max (1RM) using 6 proven formulas including Epley and Brzycki. Get a full training percentage table for strength programming.
Pregnancy Due Date Calculator
Calculate pregnancy due dates from last menstrual period or conception date. Include trimester breakdowns, important milestone dates, appointment schedules, and fetal development information.
Protein Intake Calculator
Calculate your daily protein needs based on body weight, activity level, age, and goal (maintain, lose, gain, endurance).
Sleep Calculator
Find the best time to wake up or go to sleep based on 90-minute sleep cycles.
Sleep Debt Calculator
Track your weekly sleep debt and get a personalised recovery plan based on your sleep goal.
Waist-to-Height Ratio Calculator
Calculate your Waist-to-Height Ratio (WHtR) to assess cardiovascular and metabolic health risk. Supports metric and imperial units with risk categories and health guidance.
Home Diy
Appliance Energy Cost Calculator
Estimate what any appliance costs to run from watts, daily hours, weekly usage, quantity, and tariff price per kWh. See daily, monthly, and yearly electricity cost instantly.
Brick Calculator
Estimate brick count, mortar bags, and total cost for any brick wall — with a to-scale SVG preview of running bond, stack bond, ⅓ offset, or herringbone. Supports modular, queen, engineer, Norman, and UK bricks.
Concrete Calculator
Estimate concrete volume, bags, ready-mix yards, and total cost for slabs, columns, footings, and stairs — all in one pour list. Imperial or metric.
Curtain Size Calculator
Work out rod length, panel width, and drop length for your window — including fullness, header allowance, and hem. Sill, floor, or puddle lengths supported.
Decking Calculator
Plan a deck build — total area, deck boards, joists, screws, and cost. Supports multiple sections, board gap, joist spacing (12"/16"/24" or 300/400/600 mm), waste percentage, and imperial or metric units.
Drywall Calculator
Calculate drywall sheets (4×8, 4×10, 4×12), screws, joint compound buckets and paper tape for any room. Subtracts doors and windows, optional ceiling, with a to-scale wall-elevation preview that shows the sheet layout.
Fence Material Calculator
Estimate fence posts, rails, pickets, and concrete bags for picket, privacy, and split-rail fences. Imperial or metric.
Flooring Calculator
Estimate flooring for one or many rooms — total area, area with waste, boxes to buy, and total cost. Switch between feet and meters. Works for laminate, hardwood, LVP, tile, vinyl, and carpet.
Gravel Calculator
Estimate gravel volume, weight, bags, and total cost for driveways, paths, drainage, and landscaping. Supports rectangle, circle, and ring shapes with imperial or metric units.
Mulch Calculator
Estimate mulch volume, cubic yards, bags, weight, waste, and cost for garden beds, borders, and tree rings. Imperial or metric.
Paver Calculator
Estimate pavers, base gravel, bedding sand bags, edge restraint length, and total cost for a patio, walkway, or driveway. Running bond, herringbone, basket weave, or stack.
Roofing Material Calculator
Estimate roofing squares, bundles, underlayment rolls, drip edge, and ridge cap for gable, hip, and shed roofs. Imperial or metric.
Tile Grout Calculator
Estimate how much grout you need by weight, volume, and bags — based on tile size, joint width, joint depth, and grout type (unsanded, sanded, epoxy).
Tile Layout Calculator
Estimate tile count, boxes, edge cuts, and cost with a live to-scale visual preview of the layout pattern — straight grid, brick (50%), 1/3 offset, or diagonal 45°.
Topsoil Calculator
Estimate topsoil volume, bags, weight, and cost for garden beds, raised beds, and lawn fill. Supports rectangular and circular beds, imperial or metric.
Wall Painting Calculator
Estimate gallons or litres of paint, cans to buy, and total cost for a room. Includes doors and windows, optional ceiling, number of coats, paint type coverage, and waste allowance.
Wallpaper Calculator
Estimate wallpaper rolls, strips, usable coverage, and total cost for a room. Includes doors and windows, roll dimensions, trim allowance, and pattern repeat waste.
Travel
Hotel Cost Calculator
Calculate the all-in hotel cost across one or more rooms — nightly rate, tax (add-on or already-included), resort fee, parking, one-time charges. Includes a built-in cost splitter for sharing the bill per-room, flat, or by custom share weights.
Road Trip Fuel Cost Calculator
Estimate fuel cost for any road trip — gallons or litres, total cost, cost per passenger, and CO₂ emissions. Supports US (mpg), UK (mpg + £/imp gallon), and metric (L/100km + €).