Utilities & Tools MCP Servers

Calculate compound interest growth with regular contributions over time. Shows year-by-year schedule, total returns, and effective annual rate. Pure computation — no external calls.

Calculate simplified aspect ratios, orientation, megapixels, and optional resize to a target width or height. Pure computation — no external calls.

Calculate sunrise, sunset, dawn, dusk, solar noon, twilight phases, day length, and moon phase for any location and date. Pure astronomical computation — no API calls, no rate limits, works offline.

Calculate running pace, finish time, or distance. Includes projected race splits for 5K, 10K, half marathon, and marathon. Pure computation — no external calls.

Complete pregnancy toolkit: due date calculator, week-by-week tracker, weight gain guidelines, baby size estimates, and milestone timeline. Pure computation — no external calls.

Calculate weighted course grades and letter averages from assignment scores, and determine what score you need on remaining work (e.g. a final exam) to reach a target grade. Pure computation — no external calls.

Calculate new salary after a percentage raise with annual, monthly, biweekly, weekly, and hourly breakdowns. Pure computation — no external calls.

Calculate fixed-rate loan payments, total interest, amortization schedule, extra principal payments, and compare your current loan to refinance scenarios. Pure computation — no external calls.

Onfleet is a logistics management platform that provides routing and dispatch software for businesses to optimize last-mile delivery operations. It is used to streamline delivery processes, manage driver assignments, and track real-time delivery progress.

Convert numbers to English words. Supports standard, currency, ordinal, and year formats. Handles up to 999 trillion. Pure computation — no external calls.

Perform arithmetic and bitwise operations on binary, octal, decimal, and hex numbers. Pure computation — no external calls.

Bluetally is an asset management software that helps users track and manage physical and digital assets, perform asset audits, and maintain asset histories for better resource management.

Calculate cumulative GPA from course grades and credit hours, and compute what term GPA you need to hit a target cumulative GPA. Supports 4.0 and 4.3 grading scales. Pure computation — no external calls.

Calculate tips, split bills between people, and compare common tip percentages. Pure computation — no external calls.

Convert between standard and scientific notation. Shows E-notation and engineering notation. Pure computation — no external calls.

Convert colors between hex, RGB, HSL, and CMYK formats. Auto-detects input format. Pure computation — no external calls.

Connect AI to your Obsidian vault via the Local REST API plugin. Read, write, search, and organize notes — including daily notes, tags, frontmatter, Dataview queries, graph analysis, and image reading. Images are returned as visual content AI models can see and analyze. Requires: Obsidian Local REST API plugin + MCPBundles Desktop

Compute X% of Y, express one number as a percent of another, percent change between two values, and increase or decrease a value by a percentage. Pure computation — no external calls.

Calculate exact age in years, months, and days from a birthdate. Includes day of the week born, zodiac sign, next birthday countdown, and total days/weeks alive. Pure computation.

Estimate body fat percentage with the US Navy circumference method and compute BMI from height and weight, including category, healthy weight range, and BMI Prime. Pure computation — no external calls.

Calculate fuel economy in MPG and L/100km from distance and fuel used. Optionally compute trip fuel cost. Pure computation — no external calls.

Calculate fuel cost for a trip from distance, vehicle efficiency, and fuel price. Shows one-way and round-trip costs. Pure computation — no external calls.

Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine. Pure computation — no external calls.

Eventzilla is an online event registration and management platform that enables organizers to create, promote, and manage events while facilitating online ticket sales and attendee management. Use it to streamline event planning processes and enhance the attendee experience.