ForHosting KIT
Everything you need.
One Kit.
Hundreds of ready-made tasks — PDF, images, audio, OCR, text AI, scraping, data and more — behind a single REST API. Send a job, get a finished result by webhook. No servers, no per-model tokens, a price you can read.
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7554ready-made tools
6channels
1API & key
$0.002per call, from
The full catalog
Search or filter by category. Every capability is its own endpoint with a published price.
⚙️ Developer UtilitiesFree
Footing concrete volume calculator
strip footing L×W×D and bags, free
S
POST /home/footing-volume$0.002⚙️ Developer UtilitiesFree
Gutter Flow Capacity Calculator
Size Gutters for Roof Runoff
B
POST /home/gutter-capacity$0.002⚙️ Developer UtilitiesFree
Gutter hanger calculator
hangers from length and spacing, free
S
POST /home/gutter-hangers$0.002⚙️ Developer UtilitiesFree
Joist hanger count calculator
hangers from joists and bearing ends
P
POST /home/joist-hanger-count$0.002⚙️ Developer UtilitiesFree
Lumber Weight Calculator
Board Feet to Pounds and Kilograms
K
POST /home/lumber-weight$0.002⚙️ Developer UtilitiesFree
Rebar Grid Calculator
Count Bars and Total Length
B
POST /home/rebar-grid$0.002⚙️ Developer UtilitiesFree
Roof rainwater runoff calculator
peak volume from area and rainfall depth
A
POST /home/roof-rain-runoff$0.002⚙️ Developer UtilitiesFree
Roof sheathing calculator
4x8 plywood or OSB sheets
B
POST /home/roof-sheathing-sheets$0.002⚙️ Developer UtilitiesFree
Roofing Squares Calculator
Include Pitch and Waste
K
POST /home/roofing-squares$0.002⚙️ Developer UtilitiesFree
Shingle bundle calculator
squares to bundles with waste free
P
POST /home/shingle-bundles$0.002⚙️ Developer UtilitiesFree
Stair stringer notch layout
riser and tread marks from rise and run
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POST /home/stair-stringer-notch$0.002⚙️ Developer UtilitiesFree
Stone Veneer Calculator
Estimate Flat Stone and Corner Pieces
F
POST /home/stone-veneer$0.002⚙️ Developer UtilitiesFree
Valley rafter length calculator
run, pitch, diagonal factor
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POST /home/valley-rafter-length$0.002⚙️ Developer UtilitiesFree
Aggregate tonnage calculator
volume to tons for gravel, sand, stone
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POST /home/aggregate-tonnage$0.002⚙️ Developer UtilitiesFree
Concrete cost estimator
volume × price/yd³ + short-load fee
A
POST /home/concrete-cost$0.002⚙️ Developer UtilitiesFree
Corner bead calculator
linear feet for metal or paper bead
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POST /home/corner-bead$0.002⚙️ Developer UtilitiesFree
Door paint calculator
estimate paint for one or both sides
F
POST /home/door-paint$0.002⚙️ Developer UtilitiesFree
Polymeric sand calculator
estimate bags for paver joints
B
POST /home/polymeric-sand$0.002⚙️ Developer UtilitiesFree
Primer calculator
estimate gallons for walls or ceilings
K
POST /home/primer-paint$0.002⚙️ Developer UtilitiesFree
Tile edge trim calculator
linear feet of bullnose or edging
B
POST /home/tile-edge-trim$0.002⚙️ Developer UtilitiesFree
Fourth root calculator
principal ∜x of any non-negative number, free
G
POST /math/fourth-root$0.002⚙️ Developer UtilitiesFree
Tile backer board calculator
cement board sheets from area and waste
A
POST /home/backer-board$0.002⚙️ Developer UtilitiesFree
Dehumidifier sizing calculator
estimate pints per day
F
POST /home/dehumidifier-sizing$0.002⚙️ Developer UtilitiesFree
Epoxy floor coating calculator
kits from floor area and kit coverage
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POST /home/epoxy-floor$0.002⚙️ Developer UtilitiesFree
Flooring underlayment calculator
foam or cork rolls by area
P
POST /home/floor-underlayment$0.002⚙️ Developer UtilitiesFree
Furnace sizing calculator
BTU from square footage and climate
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POST /home/furnace-sizing$0.002⚙️ Developer UtilitiesFree
Insulation batt calculator
bundles for walls or attics
B
POST /home/insulation-batts$0.002⚙️ Developer UtilitiesFree
Insulation cost estimator
material cost from area, R-value and price/sqft
S
POST /home/insulation-cost$0.002⚙️ Developer UtilitiesFree
Peel-and-stick wallpaper calculator
rolls by area and pattern waste
F
POST /home/peel-stick-wallpaper$0.002⚙️ Developer UtilitiesFree
Recommended R-value calculator
attic, wall & floor by climate zone
A
POST /home/recommended-r-value$0.002⚙️ Developer UtilitiesFree
Room CFM calculator
airflow from room volume and ACH
K
POST /home/room-cfm$0.002⚙️ Developer UtilitiesFree
Window casing calculator
linear feet of trim
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POST /home/window-casing$0.002⚙️ Developer UtilitiesFree
Fractional exponent calculator
base^(numerator/denominator)
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POST /math/fractional-exponent$0.002⚙️ Developer UtilitiesFree
Frustum cone area
total surface from two radii and slant height
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POST /math/frustum-cone-area$0.002⚙️ Developer UtilitiesFree
Conductor ampacity derating calculator
bundled wire adjustment
F
POST /home/ampacity-derate$0.002⚙️ Developer UtilitiesFree
Thermal Expansion Tank Calculator for Water Heaters
F
POST /home/expansion-tank-sizing$0.002⚙️ Developer UtilitiesFree
Generator sizing calculator
wattage from running and starting loads
A
POST /home/generator-sizing$0.002⚙️ Developer UtilitiesFree
Outlet spacing calculator
receptacles needed by wall length
K
POST /home/outlet-spacing$0.002⚙️ Developer UtilitiesFree
Pipe water velocity calculator
speed from flow rate and diameter
P
POST /home/pipe-velocity$0.002⚙️ Developer UtilitiesFree
Pipe water volume calculator
liters and gallons from diameter
S
POST /home/pipe-water-volume$0.002⚙️ Developer UtilitiesFree
Water pressure head calculator
convert PSI and feet
B
POST /home/water-pressure-head$0.002⚙️ Developer UtilitiesFree
Fundamental counting principle calculator
multiply choices across stages
H
POST /math/fundamental-counting-principle$0.002⚙️ Developer UtilitiesFree
Galileo's paradox of infinity
pairing counting numbers with their squares
G
POST /math/galileos-paradox-of-infinity$0.002⚙️ Developer UtilitiesFree
Gamma function calculator
Lanczos approximation of Γ(x) for real numbers
H
POST /math/gamma-function$0.002⚙️ Developer UtilitiesFree
Fertilizer NPK Calculator
Pounds Needed for a Nitrogen Target
F
POST /home/fertilizer-npk$0.002⚙️ Developer UtilitiesFree
Landscape gravel calculator
cubic yards and tons from bed area and depth
A
POST /home/landscape-gravel$0.002⚙️ Developer UtilitiesFree
Sod roll calculator
rolls and pallets from lawn area and waste
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POST /home/sod-rolls$0.002⚙️ Developer UtilitiesFree
Gauss-Jordan elimination calculator
solve linear systems with RREF, free
G
POST /math/gauss-jordan-elimination$0.002⚙️ Developer UtilitiesFree
Bark mulch calculator
cubic yards and bags for garden beds
B
POST /home/bark-mulch$0.002⚙️ Developer UtilitiesFree
Fence rail calculator
horizontal rails by section
K
POST /home/fence-rails$0.002⚙️ Developer UtilitiesFree
Patio paver count calculator
pieces from area, size and waste
S
POST /home/patio-paver-count$0.002⚙️ Developer UtilitiesFree
Plant spacing calculator
plants per bed from area and spacing
P
POST /home/plant-spacing$0.002⚙️ Developer UtilitiesFree
GCD calculator
greatest common divisor via the Euclidean algorithm
H
POST /math/gcd$0.002⚙️ Developer UtilitiesFree
Deck cost estimator
decking, framing, fasteners and footing total, free
A
POST /home/deck-cost$0.002⚙️ Developer UtilitiesFree
Drywall cost estimator
price sheets, compound, screws and tape
F
POST /home/drywall-cost$0.002⚙️ Developer UtilitiesFree
Renovation budget calculator
itemized costs and contingency
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POST /home/renovation-budget$0.002⚙️ Developer UtilitiesFree
GCF calculator
greatest common factor of two integers
G
POST /math/gcf$0.002⚙️ Developer UtilitiesFree
Acceleration from distance and time calculator
a = 2s/t²
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POST /mech/acceleration-from-distance$0.002⚙️ Developer UtilitiesFree
Initial velocity for distance calculator
solve u from s, a, and t
B
POST /mech/initial-velocity-required$0.002⚙️ Developer UtilitiesFree
Reaction distance calculator
d = v × t from speed and reaction time
P
POST /mech/reaction-distance$0.002No capabilities match your search.
How it works
1
Get your key
Create an account with your email and add balance when you need it. No subscription, no sales call.
2
Call the endpoint
One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.
3
Collect the result
Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.
Pay only for what you use
No subscription. Free tools run in your browser; paid tasks draw from your balance, which never expires.
Free tools
$0.00
On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.
Pay-as-you-go
Per task
$0.002+
The full API — 7500+ capabilities — billed only for what you run, from $0.002 per call. No monthly fee.
Balance
$10.00+
Top up your balance and spend it across web, API and the app. It never expires.