Financial calculator category
Lawn & Garden calculators
Order mulch, topsoil, gravel, sand, seed and sod, and plan fertilizer and watering for a yard. 8 calculators here — Mulch Calculator, Topsoil Calculator and Gravel Calculator among them — each showing its formula, a worked example, and its sources.
Compare scenarios, not just answers
Start with values you can verify, save a baseline and change one assumption at a time. Formula, worked example, interpretation boundary and authoritative reference are on every calculator below.
Mulch Calculator
Calculate the cubic yards and the bags of mulch needed to cover a bed at a chosen depth.
Open calculator →02Topsoil Calculator
Calculate the cubic yards, bags and tons of topsoil needed for a lawn, a garden or a raised bed.
Open calculator →03Gravel Calculator
Calculate the cubic yards and tons of gravel needed to cover a path, a driveway or a bed.
Open calculator →04Sand Calculator
Calculate the cubic yards and tons of sand needed under pavers or in a play area.
Open calculator →05Grass Seed Calculator
Calculate the pounds and bags of grass seed needed for a lawn from its area and a seeding rate.
Open calculator →06Lawn Fertilizer Calculator
Calculate the pounds and bags of fertilizer needed to apply a set amount of nitrogen to a lawn.
Open calculator →07Sod Calculator
Calculate the number of sod rolls needed to cover a lawn, with a waste allowance.
Open calculator →08Lawn Watering Calculator
Calculate the gallons and sprinkler minutes needed to give a lawn a chosen depth of water.
Open calculator →Every tool, one table
Lawn & Garden calculators at a glance
Each row shows the headline figure that calculator returns at its own worked-example inputs, so the whole category is comparable before you open anything.
| Calculator | What it answers | Headline output | Worked example |
|---|---|---|---|
| Mulch Calculator | Order the right amount of mulch for a garden bed or around a tree in one trip. | Mulch needed (cubic yards) | 3.7 |
| Topsoil Calculator | Decide between bulk delivery and bags, and order the right weight for a truck. | Topsoil needed (cubic yards) | 6.2 |
| Gravel Calculator | Order stone by the ton for a surface of a given area and depth. | Gravel needed (cubic yards) | 5.6 |
| Sand Calculator | Order a sand base or a sandbox fill without guessing the volume. | Sand needed (cubic yards) | 1.2 |
| Grass Seed Calculator | Buy the right amount of seed for a new lawn or an overseeding job. | Seed needed (lb) | 30 |
| Lawn Fertilizer Calculator | Apply the labeled amount of nitrogen and no more, whatever the bag's strength. | Fertilizer needed (lb) | 25 |
| Sod Calculator | Order enough sod to finish the job in one delivery, because it must be laid fresh. | Rolls needed | 126 |
| Lawn Watering Calculator | Turn an inch of water a week into the minutes to run a sprinkler. | Water per week (gallons) | 1,869 |
These are example results at each calculator’s default inputs: open any calculator above to try your own numbers. The lawn & garden figures here come from each calculator’s own published formula, so any result can be traced back to its inputs, and a result that looks surprising is more often a sign that an assumption needs changing than that the arithmetic is wrong.
Keep exploring
Related calculator categories
Next to the lawn & garden tools, these categories answer the questions that usually come up alongside them.
People also ask
Lawn & Garden calculator questions
What can I calculate in the lawn & garden category?
8 calculators: Mulch Calculator, Topsoil Calculator, Gravel Calculator, Sand Calculator, Grass Seed Calculator, Lawn Fertilizer Calculator, Sod Calculator, Lawn Watering Calculator. Order mulch, topsoil, gravel, sand, seed and sod, and plan fertilizer and watering for a yard.
Are the lawn & garden calculators free?
Yes. Calculators run in your browser. No account, no sign-up, no gated result. Inputs are not sent to a server, and each page shows its formula, a worked example, limitations and its sources.
How accurate are these lawn & garden estimates?
The arithmetic follows each published formula and is tested at normal and boundary values. Accuracy for a real decision depends on your inputs and on whether fees, rules or timing fall outside the model. Interpretation boundaries are stated on the page.
Which lawn & garden calculator should I start with?
Start with the one matching the decision you face. For example, the Mulch Calculator returns mulch needed (cubic yards) of 3.7 at its worked-example inputs. Each page links the related calculators that answer the next question.
Which lawn & garden calculator asks for the fewest inputs?
Mulch Calculator, Gravel Calculator, Sand Calculator and 3 more each ask for 3. The most any lawn & garden calculator asks for is 4 (Topsoil Calculator and Lawn Fertilizer Calculator), and the middle calculator takes 3.
Which lawn & garden calculator asks for the most inputs?
Topsoil Calculator asks for 4: area to cover (sq ft), soil depth (in), bag size (cu ft) and weight per cubic yard (tons). Expect to gather more documents for it than for Mulch Calculator, which asks for 3.
Which input decides the result most often across the lawn & garden calculators?
Area to cover (sq ft) moves the headline result most in 2 of the 8 lawn & garden calculators tested, including Gravel Calculator and Sod Calculator. Each was measured by moving one input at a time from its worked-example value and comparing the change in the headline result.
What kind of result do the lawn & garden calculators return?
Of the 8 lawn & garden calculators, 8 return a plain number as the headline result. Every one also shows 2 to 3 results in total.
What do the lawn & garden calculators ask you to enter?
Across the 8 lawn & garden calculators there are 26 input fields: 23 plain numbers, 2 percentages and 1 choices from a list. Each field's label names exactly what to enter, and the prefilled value shows what a typical entry looks like.
Which lawn & garden calculators show a period-by-period schedule?
None of the 8 lawn & garden calculators builds a schedule: each returns its result directly from the formula, so the worked example and the sensitivity tables are the evidence to read.
What does the mulch calculator show at its worked example?
At the worked-example inputs the mulch needed (cubic yards) is 3.7. It rises with bed area (sq ft) and mulch depth (in); bag size (cu ft) does not move it. Across every input tested, bed area (sq ft) moves it most.