Home calculators
Calculators and planners for running a household. Money: Monthly budget, 50/30/20 budget calculator, Subscription costs, Roommate rent and Wedding budget calculator. Energy and bills: AC BTU calculator, Heater size calculator, Appliance energy calculator, LED savings calculator, Thermostat savings calculator and Water bill calculator. Planning: Meal planner, Grocery list maker, Moving box calculator, Party food calculator and Cleaning schedule generator.
- AC BTU calculatorRoom air conditioner size in BTU/h from area, sun, people and kitchen.
- Appliance energy calculatorYearly and monthly energy cost of one appliance, with its standby power counted separately.
- BBQ meatRaw meat and side dishes to buy for a barbecue by guests, appetite and bone-in or boneless cuts.
- Bucket list makerA bucket list with categories and done ticks, a progress count and plain-text export, saved in your browser.
- 50/30/20 budget calculatorSplit monthly income into needs, wants and savings using the 50/30/20 rule of thumb.
- Cleaning schedule generatorSpreads chores by room and frequency over the days you choose, as a printable 4-week plan.
- Curtain size calculatorCut length, fabric per panel and total fabric for made-to-measure curtains.
- Decision matrix makerWeight your criteria, score each option from 0 to 10 and get ranked totals for a clearer choice.
- Dog pregnancyApproximate whelping date from the mating date, with the likely window and key dates for the vet.
- Furniture fit calculatorChecks whether a piece of furniture passes through a doorway, with spare room.
- Gift budget plannerA list of people with a gift budget and spend each, with what is left and the totals, saved in your browser.
- Grocery list makerA shopping list grouped by aisle with check boxes, saved in your browser and printable.
- Heater size calculatorRule-of-thumb heater power from room area, ceiling height and insulation.
- Kids allowance calculatorWeekly, monthly and yearly pocket money from an age-based rule or a fixed amount, split into save, spend and share.
- Laundry cost calculatorCost of a load from water, washing and drying energy and detergent, per load, month and year.
- LED savings calculatorYearly savings, payback time and 10-year savings when swapping bulbs for LED.
- Meal plannerA weekly menu with breakfast, lunch, dinner and snack for each day, saved in your browser.
- Monthly budgetIncome against nine spending categories: what is left each month, percentages and the yearly effect.
- Moving box calculatorNumber of small, medium and large boxes from rooms and load, plus tape.
- Party drink calculatorBottles of beer, wine and spirits, soft drinks and ice for a party of a given size and length.
- Party food calculatorMain dish, appetizers, sides, rolls and desserts to prepare for a given number of guests.
- Plant wateringHouseplants with a watering interval, next dates, a watered button and calendar reminders you can download.
- Reward chart makerA printable weekly chart with a child's name, their tasks in rows and the days in columns.
- Roommate rentSplit rent between roommates by room size, with shared space and a bathroom extra; utilities split evenly.
- Screen time calculatorHours of screen time per day as a share of your waking day and as years over the rest of a lifespan.
- Shower water usage calculatorWater per shower and per month from flow rate and time, with water and heating cost.
- Subscription costsA list of subscriptions with their monthly and yearly cost and the total per week, month and year.
- Tea steeping timerHow long to steep each type of tea and how hot the water should be, with a countdown timer.
- Thermostat savings calculatorRough yearly savings from a thermostat setback, using a commonly cited US DOE rule of thumb.
- TV sizeTV diagonal for a viewing distance, or the distance for a given TV, with screen width and height.
- Water bill calculatorWater bill from usage, your price per unit, optional two tiers, sewer and fixed charges.
- Water volume calculatorLiters, US gallons and m3 for rectangular, round, oval and sloped-floor tanks.
- Wedding budget calculatorDivide a wedding budget into categories with editable percentage shares, plus cost per guest.
- Wire gauge converterAWG to diameter and mm2, or mm2 to the nearest AWG, with resistance.