SmartTools is a remote MCP server that gives an AI agent 73 tools, among them age_calculator, angle_converter, area_converter. It answers at https://smart-tools.xyz/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 10 September 2026; the last check, on 19 October 2026, succeeded.
70+ free calculators & converters as MCP tools; each result links to its source page.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
age_calculator | Exact age in years, months and days between a birth date and a reference date (default: today). Runs on smart-tools.xyz. Inputs: birth_date, at_date, locale |
angle_converter | Convert a value between angle units. Units: ° (Degree), rad (Radian), grad (Gradian), mrad (Milliradian), rev (Turn), ′ (Arcminute), ″ (Arcsecond). Calculation runs on smart-tools.xyz. Inputs: value, from, to, locale |
area_converter | Convert a value between area units. Units: km² (Square kilometer), m² (Square meter), cm² (Square centimeter), mm² (Square millimeter), ha (Hectare), ac (Acre), mi² (Square mile), ft² (Square foot), yd² (Square yard), in² (Square inch). Cal Inputs: value, from, to, locale |
aspect_ratio_calculator | Simplify a width×height ratio and scale to a new width or height. Runs on smart-tools.xyz. Inputs: width, height, new_width, new_height, locale |
base64 | Encode text to Base64 or decode Base64 back to text, UTF-8 safe, with an optional URL-safe alphabet. Runs on smart-tools.xyz. Inputs: text, direction, url_safe, locale |
bmi_calculator | Body Mass Index and category. system=metric: weight_kg, height_cm. system=imperial: weight_lb, height_ft (+height_in). Runs on smart-tools.xyz. Inputs: system, weight_kg, height_cm, weight_lb, height_ft, height_in |
bmr_calculator | Basal metabolic rate (Mifflin–St Jeor) and daily calories (TDEE = BMR × activity). Runs on smart-tools.xyz. Inputs: sex, age, height_cm, weight_kg, activity, locale |
body_fat_calculator | Body fat percentage by the US Navy (Hodgdon–Beckett) method, metric measurements in cm. Females require hip_cm. Runs on smart-tools.xyz. Inputs: sex, height_cm, neck_cm, waist_cm, hip_cm, locale |
case_converter | Convert text to UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE. Runs on smart-tools.xyz. Inputs: text, case, locale |
color_converter | Convert a color between HEX, RGB and HSL. Accepts #hex, rgb()/rgba(), hsl()/hsla(). Runs on smart-tools.xyz. Inputs: color, locale |
compound_interest_calculator | Future balance and interest earned: A = P(1 + r/n)^(nt). Runs on smart-tools.xyz. Inputs: principal, annual_rate, years, compounds_per_year, locale |
cron_parser | Parse a 5-field cron expression (minute hour day-of-month month day-of-week) into a plain-English description. Runs on smart-tools.xyz. Inputs: expression, locale |
csv_to_json | Parse CSV/TSV text (auto-detecting tab, semicolon or comma delimiter) with a header row into an array of JSON objects. Runs on smart-tools.xyz. Inputs: text, has_header, locale |
csv_to_sql | Turn CSV/TSV rows into SQL INSERT statements with standard double-quoted identifiers and escaped values. Runs on smart-tools.xyz. Inputs: text, table_name, has_header, batch_size, nulls, quote_all |
data_converter | Convert a value between data units. Units: bit (Bit), B (Byte), kB (Kilobyte), MB (Megabyte), GB (Gigabyte), TB (Terabyte), KiB (Kibibyte), MiB (Mebibyte), GiB (Gibibyte), TiB (Tebibyte). Calculation runs on smart-tools.xyz. Inputs: value, from, to, locale |
date_difference_calculator | Difference between two dates: calendar years/months/days, total days, weeks and weekday count. Runs on smart-tools.xyz. Inputs: start_date, end_date, locale |
discount_calculator | Final price after one or two successive discounts, plus amount saved. Runs on smart-tools.xyz. Inputs: price, discount, second_discount, locale |
due_date_calculator | Estimated due date by Naegele's rule (+280 days from last period, adjusted for cycle length). Runs on smart-tools.xyz. Inputs: last_period, cycle_length, locale |
electricity_cost_calculator | Running cost of an appliance per day, month and year from its wattage. Runs on smart-tools.xyz. Inputs: power_watts, hours_per_day, price_per_kwh, locale |
energy_converter | Convert a value between energy units. Units: J (Joule), kJ (Kilojoule), cal (Calorie), kcal (Kilocalorie), Wh (Watt-hour), kWh (Kilowatt-hour), BTU (British thermal unit), ft·lb (Foot-pound), eV (Electronvolt). Calculation runs on smart-too Inputs: value, from, to, locale |
file_hash | Compute a SHA-1/256/384/512 hex checksum of provided text or base64 bytes. Runs on smart-tools.xyz. Inputs: text, data, algorithm, locale |
fraction_calculator | Exact arithmetic on two fractions (a/b op c/d), reduced to lowest terms. op is one of + - * /. Runs on smart-tools.xyz. Inputs: a, b, operator, c, d, locale |
fuel_cost_calculator | Fuel needed and trip cost. system=metric: distance km, consumption L/100km. system=imperial: distance miles, consumption mpg. Runs on smart-tools.xyz. Inputs: distance, consumption, fuel_price, system, locale |
gitignore_generator | Build a .gitignore from curated templates for Node, Python, Go, Rust, macOS, VS Code and more. Runs on smart-tools.xyz. Inputs: technologies, locale |
gpa_calculator | Weighted grade point average from letter grades (US 4.0 scale, +/-) or numeric grade points and credit hours. Runs on smart-tools.xyz. Inputs: courses, locale |
gradient_generator | Build a CSS linear or radial gradient background declaration from two or more colors. Runs on smart-tools.xyz. Inputs: type, angle, colors, locale |
hash_generator | Hash text with SHA-1, SHA-256, SHA-384 or SHA-512 (hex, over UTF-8 bytes). MD5 is not supported. Runs on smart-tools.xyz. Inputs: text, algorithm, locale |
hours_calculator | Time worked between two clock times (handles overnight), minus a break, with optional pay. Times as HH:MM. Runs on smart-tools.xyz. Inputs: start, end, break_minutes, hourly_rate, locale |
htaccess_generator | Generate Apache .htaccess rules: force HTTPS, www redirect, caching, gzip, hotlink protection and more. Runs on smart-tools.xyz. Inputs: force_https, www, disable_listing, cache, gzip, block_hotlink |
html_entities | Escape the five special HTML characters (optionally all non-ASCII) or decode named and numeric HTML entities back to text. Runs on smart-tools.xyz. Inputs: text, direction, encode_all, locale |
ideal_weight_calculator | Healthy weight range (BMI 18.5–24.9) plus Devine, Robinson, Miller and Hamwi formula estimates, from height in cm. Runs on smart-tools.xyz. Inputs: sex, height_cm, locale |
json_formatter | Validate and pretty-print or minify JSON, reporting the line and column on a parse error. Runs on smart-tools.xyz. Inputs: text, action, indent, locale |
jwt_decoder | Decode a JSON Web Token's header and payload (base64url). Does NOT verify the signature — that needs the secret/key. Runs on smart-tools.xyz. Inputs: token, locale |
layout_fixer | Fix text typed in the wrong keyboard layout between English QWERTY and Ukrainian ЙЦУКЕН. Runs on smart-tools.xyz. Inputs: text, direction, locale |
length_converter | Convert a value between length units. Units: km (Kilometer), m (Meter), cm (Centimeter), mm (Millimeter), µm (Micrometer), mi (Mile), yd (Yard), ft (Foot), in (Inch), nmi (Nautical mile). Calculation runs on smart-tools.xyz. Inputs: value, from, to, locale |
loan_calculator | Monthly payment, total repayment and interest for an amortising loan (annuity formula). Runs on smart-tools.xyz. Inputs: principal, annual_rate, years, locale |
lorem_ipsum | Generate placeholder lorem ipsum text by paragraphs, sentences or words. Runs on smart-tools.xyz. Inputs: count, unit, start_lorem, locale |
margin_calculator | Profit, margin (share of price) and markup (share of cost) from cost and selling price. Runs on smart-tools.xyz. Inputs: cost, price, locale |
markdown_table | Build a padded GitHub-flavored Markdown table from CSV/TSV text (first row is the header). Runs on smart-tools.xyz. Inputs: text, locale |
meta_tag_generator | Generate SEO, Open Graph and Twitter Card HTML meta tags for a page. Runs on smart-tools.xyz. Inputs: title, description, url, site_name, image, twitter_card |
mortgage_calculator, number_base, pace_calculator, password_generator, percentage_calculator, pressure_converter, random_number_generator, regex_tester, remove_duplicates, robots_txt_generator, salary_calculator, scientific_calculator, slug_generator, speed_converter, standard_deviation_calculator, subnet_calculator, table_to_csv, temperature_converter, text_counter, text_diff, time_converter, timestamp_converter, tip_calculator, transliteration, triangle_calculator, unit_price_calculator, url_encoder, utm_builder, uuid_generator, vat_calculator, volume_converter, wcag_contrast_checker, weight_converter
Every block below points at https://smart-tools.xyz/mcp. Pick your client and copy.
claude mcp add --transport http smarttools https://smart-tools.xyz/mcp
{
"mcpServers": {
"smarttools": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://smart-tools.xyz/mcp"]
}
}
}{
"mcpServers": {
"smarttools": {
"url": "https://smart-tools.xyz/mcp"
}
}
}{
"servers": {
"smarttools": {
"type": "http",
"url": "https://smart-tools.xyz/mcp"
}
}
}{
"context_servers": {
"smarttools": {
"url": "https://smart-tools.xyz/mcp"
}
}
}{
"mcpServers": {
"smarttools": {
"serverUrl": "https://smart-tools.xyz/mcp"
}
}
}{
"mcpServers": {
"smarttools": {
"url": "https://smart-tools.xyz/mcp"
}
}
}name: SmartTools
version: 0.0.1
schema: v1
mcpServers:
- name: SmartTools
type: streamable-http
url: https://smart-tools.xyz/mcp{
"mcpServers": {
"smarttools": {
"httpUrl": "https://smart-tools.xyz/mcp"
}
}
}{
"mcpServers": {
"smarttools": {
"type": "http",
"url": "https://smart-tools.xyz/mcp"
}
}
}{
"mcpServers": {
"smarttools": {
"url": "https://smart-tools.xyz/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fsmart-tools.xyz%2Fmcp&type=streamable_http&id=smarttools&name=SmartTools
It answered our last check on 19 October 2026 in 137 ms. Over 6 checks since 10 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
73, as returned by the server's own tools/list on 12 September 2026: age_calculator, angle_converter, area_converter, aspect_ratio_calculator, base64, bmi_calculator, bmr_calculator, body_fat_calculator, and 65 more.
It answered our last check on 19 October 2026 in 137 ms. Over 6 checks since 10 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://smart-tools.xyz/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.9thshini. Endpoint host: smart-tools.xyz. ARD identifier: urn:air:io.github.9thshini:mcp:smart-tools.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.