Kutools Online — AI for Excel, Outlook & Word

Bring AI to Excel, Outlook, and Word so you work faster and stay in flow—no app switching and no complex setup. In Excel, ask for insights, extract & clean messy text, and generate reliable formulas from plain English. In Outlook, draft and polish emails in seconds and summarize long threads. In Word, analyze, restructure, and translate with context. Kutools Online runs inside Office so results arrive faster and your work stays consistent.

Seamless Excel/Outlook/Word experience

No complex setup — works like native Office

Works on Windows, macOS & the web

Flexible AI: supports OpenAI, Google AI & more

Support 45 languages, just like Microsoft Office

Fast, real-time results with streaming output

Privacy-first processing & encryption

Free trial: 500 uses across all apps

60K+

Active Users

98%

Customer Satisfaction

3.5x

Productivity Increase

50+

Smart Functions

3 AI-Powered Office Solutions

Kutools Online includes 3 powerful AI tools

Browse all Kutools on Microsoft AppSource

Kutools for Excel

Transform your Excel experience with AI-powered productivity tools

Intelligent Data Analysis

Ask questions about your data and get instant AI-powered answers

Automatic Information Extraction

Extract dates, contact info, addresses, and more from messy text

Advanced Text Processing

Clean up data, remove formatting inconsistencies, and translate content

Smart Formula Generation

Convert natural language descriptions into complex Excel formulas

Content Creation & Enhancement

Generate summaries, polish text, and rewrite content in different styles

Multi-language Support

Translate text between languages and automatically convert units

Kutools for Outlook

Advanced AI tools to streamline email management and boost productivity

AI-Powered Responses

Learn from your past emails to provide precise, context-aware replies

Email Summarization

Quickly extract the main points from lengthy messages

Professional Email Drafting

Enhance grammar, tone, and style for professional communication

Instant Translation

Seamless communication in multiple languages

Customizable AI Skills

Tailor the assistant to your specific email management needs

In-Context Assistance

Use AI right inside Outlook’s compose and reading panes—no tab switching

Kutools for Word

Advanced AI tools to streamline document editing and boost productivity

Key Information Extraction

Quickly extract key information from documents to grasp core content

Document Analysis

Analyze the entire document to provide precise and relevant answers

Content Generation

Generate high-quality, well-structured content based on specified topics

Text Refinement

Enhance clarity, coherence, and fluency through intelligent text refinement

Multilingual Translation

Seamlessly support multilingual translation with semantic accuracy

Contextual Extensions

Generate contextually coherent extensions to make documents flow naturally

Popular Features

Kutools for Excel — Function Library

Ask questions and get AI-powered answers, extract data, analyze data, and advanced text processing.

Kutools for Excel — Quick Table

Generate a quick table based on your command.

Kutools for Excel — Conditional Formatting

Briefly describe the conditional formatting, then apply it.

Kutools for Outlook — Quick Reply

Instantly generate a personalized reply with AI.

Kutools for Outlook — Polish

Write faster and sound sharper—let AI polish your emails.

Kutools for Outlook — Continue Writing

Continue writing with AI to expand ideas and finish faster.

Kutools for Word — Compose

Generate high-quality, well-structured content based on specified topics and key points.

Kutootols for Word — Translate

Seamlessly translate content for global audiences.

Kutools for Word — Summary

Quickly extract key information from documents to help you efficiently grasp the core content.

Quick Start: How Kutools Online Works

Three quick steps — see the full installation guide

Install & Activate

Install from Microsoft AppSource in Excel, Outlook, or Word; sign in to start.

Pick a Plan & Set Up AI

Basic (Free): 500 free uses, no model selection.
Premium: AI Cloud Service, choose top models, exclusive email prompts.

Start Using AI Features

Open the Kutools panel and run features directly inside Office.

AI Subscription Plans

Choose the plan that works best for you and your team

Save 50% with Yearly

Was $19.99

Basic

500 free uses

For Excel, Outlook, Word
All AI Features
Custom AI Key
Kutools AI Cloud Service
Coordination with Top Language Models
Exclusive AI Email Prompts

Get Started

Premium

$9.99

per month

For Excel, Outlook, Word
All AI Features
Custom AI Key
Kutools AI Cloud Service
Coordination with Top Language Models
Exclusive AI Email Prompts

Get Started

Enterprise

Custom Price

Tailored to your needs

Everything in Premium
Free Use for Enterprise Employees
Multi-User Management
Enterprise Technical Support

Contact Sales

Why Choose Kutools Online

Discover the unique advantages that set Kutools Online apart from other Office productivity tools

Seamless AI Integration

Kutools Online works with the world's leading language models, providing flexibility and choice...

Compatible with multiple AI platforms
Flexible API key integration
Consistent performance
Seamless switching

No Complex Setup Required

Kutools Online integrates directly into your Office applications with minimal setup...

Direct integration
50+ smart functions
No technical expertise
Native-like experience

Multi-Platform Compatibility

Kutools Online supports a wide range of Office versions...

Excel, Outlook, Word
Desktop & web
Windows & Mac
Microsoft 365 & older

Real-Time Processing

All Kutools Online functions provide instant results with streaming output...

Instant results
No delays
Efficient workflow
Real-time insights

What Our Users Say

Discover how Kutools Online is transforming workflows worldwide

John Davidson

Financial Analyst

“Kutools for Excel fundamentally changed how my team explores data. Instead of wrestling with nested formulas, I describe my intent in plain English and get a reliable formula back—plus an explanation I can share with colleagues. In monthly close, we cut two hours from a process that used to take the entire afternoon.”

Sarah Mitchell

Marketing Manager

“Email threads can spiral out of control. Kutools for Outlook summarizes long conversations in seconds and proposes a crisp, on-brand reply. I still review and tweak, but starting from 80% complete saves me from context switching and lets me focus on campaign strategy, not inbox triage.”

Robert Taylor

Content Writer

“For long-form documents, Kutools for Word is my second set of eyes. It flags unclear sections, suggests tighter structure, and even translates segments for localized versions—without leaving Word. The result is cleaner drafts and fewer review cycles with editors.”

Ananya Kumar

Data Operations Lead

“We import messy CSVs every day. Kutools cleans dates, normalizes phone numbers, and extracts addresses with remarkable accuracy. What used to be a spreadsheet full of find/replace macros is now a repeatable, documented step our new hires can run on day one.”

Laura Martinez

Customer Success Manager

“I live in Outlook. The built-in prompts help me tailor tone by customer segment—supportive for new users, direct for admins. Summaries of previous tickets appear alongside my draft, so I never miss a detail or repeat a question.”

Yi Wang

Operations Director

“Security was our first concern. Being able to use our own model keys and keep everything inside Office made IT comfortable. Adoption was smooth: no new logins, no new tabs—just AI where the work already happens.”

Frequently Asked Questions

Which Office versions are supported?

Excel: Supports Excel 2016 or later on Windows, Excel 2016 or later on Mac, and Excel on the web.

Outlook: Supports Outlook 2013 or later on Windows, Outlook 2016 or later on Mac, and Outlook on the web.

Word: Supports Word 2013 or later on Windows, Word 2016 or later on Mac, and Word on the web.

Is my data secure with Kutools Online?

Yes, we take data security seriously. Kutools Online processes your data with industry-standard encryption and does not store your personal information longer than necessary to provide the service. For all plans including the free Basic plan, we offer the option to use your own AI keys.

What happens during the free trial?

Enjoy full access to all Kutools Online AI features for 500 uses across Excel, Outlook, and Word — no credit card required and no charges during the trial.

After the trial, you can subscribe to Premium: $9.99/month or $99/year. See details in the Pricing section.

What’s the difference between Premium Monthly and Yearly? Can I cancel?

Same features, different billing. Premium Monthly is billed at $9.99/month (was $19.99). Premium Yearly is billed once per year at $99/year (was $199).

Cancellation: You can cancel anytime. There are no cancellation fees—your access stays active until the end of the current billing period, and the plan simply won’t renew.

You can switch between Monthly and Yearly at renewal.

24/7 online email support if you have any questions

Ready to Transform Your Office Experience?

Join thousands of professionals who are already using Kutools Online to work smarter and achieve more in less time.

Get all Kutools on Microsoft AppSource