Finance
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Browse simple online calculators for finance, health, math, home projects, time, business, and more. TinyCalculators.com is built to make everyday calculations quick and easy.
Popular Calculators
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Plant Population Calculator
Estimate plants per acre based on row spacing and plant spacing.
Beam Load Calculator
Estimate beam loads for framing, construction, and structural planning.
Ohm's Law Calculator
Calculate voltage, current, resistance, and power for basic electrical circuits.
Pipe Flow Calculator
Estimate flow through a pipe for plumbing and water system planning.
Overtime Cost Calculator
Calculate overtime pay, regular pay, and total earnings for work hours.
GPA Calculator
Calculate grade point average using course grades and credit hours.
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Health
Health, fitness, nutrition, weight, BMI, calories, and wellness calculators.
Health Calculators →
30 calculators
Math
Basic math, fractions, percentages, algebra, geometry, and everyday number tools.
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30 calculators
Home
Home improvement, construction, flooring, paint, concrete, roofing, and project calculators.
Home Calculators →
30 calculators
Time
Time, dates, hours, days, work schedules, age, countdowns, and duration tools.
Time Calculators →
30 calculators
Business
Business, profit, pricing, ROI, margins, revenue, costs, marketing, and growth calculators.
Business Calculators →
30 calculators
Auto
Auto, fuel, mileage, loans, payments, depreciation, tires, towing, and vehicle cost calculators.
Auto Calculators →
30 calculators
Education
Education, GPA, grades, test scores, study time, reading time, attendance, and school calculators.
Education Calculators →
30 calculators
Cooking
Cooking, baking, ingredient conversions, recipe scaling, food cost, serving size, and kitchen calculators.
Cooking Calculators →
30 calculators
Agriculture
Agriculture, crops, seeding, fertilizer, irrigation, livestock, hay, grain, acreage, and farm calculators.
Agriculture Calculators →
50 calculators
Nature
Nature, trees, gardens, rainwater, weather, land, trails, wildlife, ponds, and outdoor calculators.
Nature Calculators →
50 calculators
HR
HR, payroll, hiring, recruiting, workforce planning, employee costs, PTO, and staffing calculators.
HR Calculators →
30 calculators
Structural
Structural calculators for beams, loads, spans, joists, rafters, footings, posts, framing, steel, rebar, and support planning.
Structural Calculators →
50 calculators
Electrical
Electrical calculators for watts, amps, volts, wire size, voltage drop, breakers, panel load, motors, transformers, generators, and energy cost.
Electrical Calculators →
60 calculators
Plumbing
Plumbing calculators for pipe size, water flow, pressure, drainage, fixtures, water heaters, pumps, tanks, and plumbing project planning.
Plumbing Calculators →
50 calculators
Solar
Solar calculators for panel sizing, system size, solar output, savings, ROI, payback period, battery backup, off-grid solar, inverter size, and solar project planning.
Solar Calculators →
25 calculators
Garden
Garden calculators for soil, raised beds, mulch, compost, planting spacing, seed starting dates, watering, irrigation, fertilizer, garden area, harvest planning, and greenhouse sizing.
Garden Calculators →
39 calculators
Area
Area calculators for shapes, rooms, floors, walls, roofing, siding, drywall, flooring, land, lots, acreage, lawns, square feet, acres, surface area, and project planning.
Area Calculators →
60 calculators