# HI Information

> Verified practical-cost data intelligence — calculators, datasets, indexes, and APIs with the source, rights, and methodology behind every number. Wedge: US Home / Moving / Local Cost.

Provenance: values labeled "verified" come from public-domain sources (EIA, BEA, BLS) with capture dates; values labeled "estimated" are modeled. Always see /trust/ and /methodology/. Cite per /citation-policy/.

## Tools
- [Compound Interest Calculator](https://hiinformation.com/calculators/finance/compound-interest/): See how an investment grows over time with compounding and optional monthly contributions — including total interest earned.
- [Mortgage Payment Calculator](https://hiinformation.com/calculators/finance/mortgage-payment/): Estimate your monthly principal and interest payment from the home price, down payment, rate, and term.
- [Loan Payment Calculator](https://hiinformation.com/calculators/finance/loan-payment/): Calculate the monthly payment and total interest for any fixed-rate loan.
- [APR Calculator](https://hiinformation.com/calculators/finance/apr/): Find a loan's true annual percentage rate once upfront fees are included.
- [Closing Cost Calculator](https://hiinformation.com/calculators/finance/closing-cost/): Estimate the cash you'll need to close on a home beyond the down payment.
- [Debt Payoff Calculator](https://hiinformation.com/calculators/finance/debt-payoff/): See how long it takes to clear a balance and how much interest you'll pay at a fixed monthly amount.
- [Refinance Calculator](https://hiinformation.com/calculators/finance/refinance/): Compare your current mortgage to a new one and find the break-even point on closing costs.
- [Salary to Hourly Calculator](https://hiinformation.com/calculators/finance/salary-to-hourly/): Convert an annual salary into an hourly wage based on your weekly hours.
- [Percentage Calculator](https://hiinformation.com/calculators/everyday/percentage/): Work out percentages three ways — a percent of a number, what percent one number is of another, and percent change.
- [Discount Calculator](https://hiinformation.com/calculators/everyday/discount/): Find the sale price and how much you save from an original price and a discount percentage.
- [Age Calculator](https://hiinformation.com/calculators/everyday/age/): Find an exact age in years, months, and days from a date of birth.
- [Date Difference Calculator](https://hiinformation.com/calculators/everyday/d-day/): Count the days between two dates — for deadlines, countdowns, and anniversaries.
- [Paint Calculator](https://hiinformation.com/calculators/home/paint/): Estimate how many gallons of paint you need from a room's dimensions, number of coats, and openings.
- [Flooring Calculator](https://hiinformation.com/calculators/home/flooring/): Find how much flooring to buy, including a waste allowance for cuts.
- [Electricity Bill Calculator](https://hiinformation.com/calculators/home/electricity-bill/): Estimate what an appliance costs to run from its wattage, hours of use, and your rate.
- [Moving Cost Calculator](https://hiinformation.com/calculators/home/moving-cost/): Get a rough estimate for a move based on home size and distance.
- [Rent vs Buy Calculator](https://hiinformation.com/calculators/home/rent-vs-buy/): A simple monthly comparison between renting and the carrying cost of buying.
- [Pyeong to Square Meters Calculator](https://hiinformation.com/calculators/units/pyeong-to-sqm/): Convert pyeong — the Korean real-estate area unit — to square meters and back, the way listings are measured.
- [Pyeong to Square Feet Calculator](https://hiinformation.com/calculators/units/pyeong-to-sqft/): Convert pyeong to square feet for comparing Korean property sizes in US terms.
- [Square Feet to Square Meters Calculator](https://hiinformation.com/calculators/units/sqft-to-sqm/): Convert square feet to square meters for floor plans and listings.
- [Tsubo to Square Meters Calculator](https://hiinformation.com/calculators/units/tsubo-to-sqm/): Convert tsubo — the Japanese area unit — to square meters.
- [Tatami to Square Meters Calculator](https://hiinformation.com/calculators/units/tatami-to-sqm/): Convert tatami mats to square meters (standard Nagoya-size estimate).
- [PSI to Bar Calculator](https://hiinformation.com/calculators/units/psi-to-bar/): Convert pressure from PSI to bar for tires, gauges, and equipment.
- [Kilograms to Pounds Calculator](https://hiinformation.com/calculators/units/kg-to-lbs/): Convert kilograms to pounds for weight, shipping, and fitness.
- [Centimeters to Inches Calculator](https://hiinformation.com/calculators/units/cm-to-inches/): Convert centimeters to inches for height, screens, and measurements.
- [Geun to Grams Calculator](https://hiinformation.com/calculators/units/geun-to-grams/): Convert geun — the Korean market weight unit — to grams (meat standard, 600 g).
- [Cubic Meters to Liters Calculator](https://hiinformation.com/calculators/units/cubic-meter-to-liter/): Convert cubic meters (rube) to liters for water, gas, and storage volumes.
- [Cups to Grams Calculator](https://hiinformation.com/calculators/units/cups-to-grams/): Convert cups to grams for baking (default: all-purpose flour ≈ 120 g/cup).
- [Grams to Cups Calculator](https://hiinformation.com/calculators/units/grams-to-cups/): Convert grams to cups for baking (default: all-purpose flour ≈ 120 g/cup).
- [Currency Converter](https://hiinformation.com/calculators/units/currency/): Convert between major currencies at recent reference rates (refreshed live when available).

## Data products
- [US Moving Cost](https://hiinformation.com/data/): Local and long-distance moving cost ranges by metro and home size. (rights pending)
- [US Local Service & Home-Project Cost](https://hiinformation.com/data/): Home-project and local service cost ranges. Blocked on rights clearance for industry references. (rights pending)
- [US Electricity Price by State](https://hiinformation.com/data/): US electricity prices (cents/kWh) — residential, commercial, industrial & all-sectors — for all 50 states + DC. Real EIA public-domain data, served via the live Electricity Rates API. (rights cleared)
- [US Cost of Living Index](https://hiinformation.com/data/): Cost-of-living index by state (BEA Regional Price Parities, US = 100) — public-domain. (rights cleared)

## Indexes
- [HI Moving Cost Index](https://hiinformation.com/indexes/hi-moving-cost/): A US moving-cost benchmark: national median local-move cost, and each metro's cost relative to the national average (US = 100).
- [HI Cost of Living Index](https://hiinformation.com/indexes/hi-cost-of-living/): State cost-of-living relative to the US average (= 100), from BEA Regional Price Parities — real public-domain data.

## API & feeds
- OpenAPI: https://hiinformation.com/api/openapi.json
- Developer docs: https://hiinformation.com/developers/
- Per-tool answer.json: https://hiinformation.com/api/answer/{slug}.json
- Feeds: https://hiinformation.com/feeds/tools.json, /feeds/datasets.json, /feeds/formulas.json, /feeds/ai-priority-pages.json
- Full version: https://hiinformation.com/llms-full.txt

## Policies
- Citation policy: https://hiinformation.com/citation-policy/
- AI usage policy: https://hiinformation.com/ai-usage-policy/
- Trust center: https://hiinformation.com/trust/